Are you looking to buy a lab-grown loose diamond or engagement ring? Select from the thousands of certified diamonds in our collection. Lab-grown diamonds are chemically, physically, and optically identical to mined diamonds — available at 50–70% less than the cost of a naturally mined stone.
A 3-carat princess cut diamond is a bold and modern choice for engagement rings or luxury jewellery, showcasing sharp angles and exceptional brilliance. Its square shape and intricate facets reflect light beautifully, offering a clean, contemporary alternative to round or cushion cuts.
Lab-grown diamonds are genuine diamonds, created in advanced laboratories that replicate natural diamond-growing conditions. They are chemically, physically, and optically identical to natural diamonds—only their origin differs. Lab-created stones are 30% to 50% more affordable than mined diamonds, giving you greater value without compromising quality or beauty.
At RÊVE Diamonds, all of our lab-grown diamonds are independently certified, usually by IGI or GIA—two of the most respected authorities in gemology.
Call us on 020 3585 2295 or chat with our diamond experts to find your perfect 3 carat princess cut lab-grown diamond today.
Prices range from £2,500 to £20,000 depending on cut, colour, clarity, and overall quality.
A 3-carat diamond weighs approximately 0.6 grams (600 milligrams).
Princess cut diamonds are square or slightly rectangular. Typical dimensions:
Length: 8.0 mm – 9.5 mm (avg. 8.6 mm)
Width: 8.0 mm – 9.5 mm (avg. 8.6 mm)
Depth: 5.2 mm – 6.8 mm (avg. 6.0 mm)